Spark-plug intensifier



W. F. SIVHTHJ SPARK PLUG INTENSIFIER.

APPLICATION FlLED NOV. 30, 1917.

JLfiMfiWg Patented uly mm INSULATION Witnesses Inventor n 0 Attorneys panying drawing, wherein Figure 1 is an elevation of the attache T p; EFICE.

WILLIAM IE. SMITH, OF ST. LOUIS, MISSOURI.

SPARK-PLUG INTENSIFTEEE.

Application filed November 30, 1917.

To all whom it may concern:

Be it known that 1, WILLIAM F. SMITH,

a citizen of the United States, residing at tit. Louis, in the State of Missouri, have invented a new and useful Spark-Plug Tntensifier, of which the following is a specilication.

The present invention appertains gener ally to spark plugs, and aims to provide a novel and improved yet extremely simple and inexpensive attachment for spark plugs, for effectively intensifying the spark, by increasing the efliciency of the plug.

With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter de scribed and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed can be made within the scope of what is claimed, without departing from the spirit of the invention. The invention is illustrated in the accomment as applied to a plug.

Fig. 2 is a section on the line 2-2 of Fig. 1.

In carrying out the invention, there is provided an elongated block 1 of fiber or other insulating material, which is engageable near one end over the binding post or stem 2 of any ordinary spark plug, to be clamped on the spark plug by means of a circular nut 3 threaded on the binding post 2. The block 1, when applied to a spark plug, extends laterally to one side and a bolt or binding post 4: is inserted through an aperture in the block 1 near its opposite end, and projects in the same direction as the binding post 2. A finger 5, preferably stamped from sheet metal, has an aperture at its basal end engaging the bolt or bind Specification of Letters Patent.

Patented July 6, ieeo.

Serial No. 206L328.

ing post l and pivotally mounts said finger on the block 1, and said finger is provided at its free end with a curved electrode or spark terminal 6 to be brought adjacent to and spaced the desired distance from the periphery of the nut 3 which serves as a cooperating electrode. The finger 5 is clamped on the block 1 in any suitable position, by means of a nut 7 threaded on the binding post 4:, thereby holding the electrode 6 properly spaced from the nut 3. A nut 8 is threaded on the binding post for clamping the electrical conductor 9 on the nut 7, whereby to connect said conductor electrically with the finger 5 and its elec trode 6. Thus, the electrical current in jumping the gap between the electrode 6 and the nut 3 will serve to intensify the spark produced by the plug. The attachment can be readily applied and removed, and is capable of inexpensive manufacture.

Having thus described the invention, what is claimed as new is The combination with a spark plug having a binding post, of a block of insulating material, a nut engaging the binding post to clamp the block fixedly in position on the spark plug, a binding post on the block, and an arcuate finger held on the block by said last named binding post and adjustable angularly toward and from the holding nut on the binding post of the spark plug, said finger lying flat on the block with the greater portion thereof in contact with the block and being held by friction against accidental movement.

In testimony that I claim the foregoing as my own, I have hereto affixed my signature in the presence of two witnesses.

"WILLIAM F. SMITH.

Witnesses:

F. H. ALLEN, J. Jorrnson. 

